Active repair of self-healing polymers with shape memory alloy wires

Eva L. Kirkby; Joseph D. Rule; Véronique J. Michaud; Nancy R. Sottos; Scott R. White; Jan-Anders E. Månson

doi:10.1117/12.715408

30 April 2007 Active repair of self-healing polymers with shape memory alloy wires

Eva L. Kirkby, Joseph D. Rule, Véronique J. Michaud, Nancy R. Sottos, Scott R. White, Jan-Anders E. Månson

Proceedings Volume 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007; 65261E (2007) https://doi.org/10.1117/12.715408
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

We report the first measurements of self-healing polymers with embedded shape memory alloy (SMA) wires. Improvements of healed peak loads by up to a factor of two are observed, approaching the performance of the virgin material. Moreover, the repairs can be effected with reduced amounts of healing agent. The improvements in performance of self-healing polymers with SMA wires are due to three effects: i) crack closure, which reduces the crack volume, ii) heating of the curing agent during polymerisation, which improves the cross-linking, and iii) mechanical registration of the two crack faces, which results in a reduced crack volume on closure.

Citation Download Citation

Eva L. Kirkby, Joseph D. Rule, Véronique J. Michaud, Nancy R. Sottos, Scott R. White, and Jan-Anders E. Månson "Active repair of self-healing polymers with shape memory alloy wires", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65261E (30 April 2007); https://doi.org/10.1117/12.715408

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